Replacement tuning tool, small. This tool can tune and restring your harp and fits the smallest of the Mid-East Harps, including the Lily Harp (TM) (HLLA), the Mid-East Lyre Harp (HLRT) and the smaller specialty harps such as the Mid-East Lyre Harp, 8 String (HLRE).
For larger harps try the Harp HPTN, Tuning Tool, Medium.
Measurements for Square Hole at End of Shaft:
4 Square Sides: .16 inches
Diagonally Across: .2 inches